Your account has been flagged.
Because of that, your profile is hidden from the public. If you believe this is a mistake, contact support to have your account status reviewed.
というメッセージが表示されていたので，指示通り運営に英語でメールを送りました．
(拙いですが伝われば良しとします)
Hello.
Why my account has been flagged?
Please remove that flag.
Thank you.
1時間ほどでフラグは解除され運営からのメールも届きました．
Hi there,
Sorry for the hassle! Sometimes our spam-detecting robots get a little overzealous and need to be reprogrammed.
I've cleared that flag now, so your account should be back to normal. You shouldn't see that message again, but let me know if I can help with anything else!
どうやらBotにスパムだと誤認された様子．
原因はよくわかりませんが，同じ操作を何度か繰り返したせいかもしれません．